docs: update plugin documentation (#888)

Eiko Wagenknecht

2024-02-23 1929241a62b67ebd9cc9831e372ab321874d03d1

 docs/advanced/making plugins.md

@@ -53,12 +53,12 @@

Normally for both `remark` and `rehype`, you can find existing plugins that you can use to . If you'd like to create your own `remark` or `rehype` plugin, checkout the [guide to creating a plugin](https://unifiedjs.com/learn/guide/create-a-plugin/) using `unified` (the underlying AST parser and transformer library).

A good example of a transformer plugin that borrows from the `remark` and `rehype` ecosystems is the [[Latex]] plugin:
A good example of a transformer plugin that borrows from the `remark` and `rehype` ecosystems is the [[plugins/Latex|Latex]] plugin:

```ts title="quartz/plugins/transformers/latex.ts"
import remarkMath from "remark-math"
import rehypeKatex from "rehype-katex"
import rehypeMathjax from "rehype-mathjax/svg.js"
import rehypeMathjax from "rehype-mathjax/svg"
import { QuartzTransformerPlugin } from "../types"

interface Options {
@@ -84,10 +84,14 @@
    externalResources() {
      if (engine === "katex") {
        return {
          css: ["https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.16.9/katex.min.css"],
          css: [
            // base css
            "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.16.9/katex.min.css",
          ],
          js: [
            {
              src: "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.16.7/contrib/copy-tex.min.js",
              // fix copy behaviour: https://github.com/KaTeX/KaTeX/blob/main/contrib/copy-tex/README.md
              src: "https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.16.9/contrib/copy-tex.min.js",
              loadTime: "afterDOMReady",
              contentType: "external",
            },